genuine stupidity, not if they cant help it but if they got a good working brain and they're just stupid, yea cant be around the person. that and sluttyness, i generaly try to date virgins or close to, (specialy since im barely not a virgin) dont mind more experienced girls but girls that just sleep around, always want it etc, yea.. no.. not a fan.
Or, fat vain stuck up people obsessed with lying about bowel movements.